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  • Alluvial or placer gold is usually found close to the Earths surface and can thus be accessed more easily Conventional hard rock mining can be considered profitable from about 1 g of gold per tonne of rock but mining alluvial gold can be economical from as little as 03 g per cubic metres of gravel
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  • Environment Goldrush Mining A clean alluvial gold washing Environment Economic and environmental considerations impose that the placer mining activities will consist in suction dredge operations that focus on the clean recovery of gold from withinstream bottom sediments without creating water disturbance The suction dredge removes the

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